Humans are now even closer to a Six Million Dollar Man bionic body, thanks to the world's first motorised prosthetic knee, which is now readily available to lower-limb amputees in parts of Europe and the US.
The Power Knee, from orthopaedic and prosthetic specialist Óssur, is said to be the first artificial leg pivot to function …

Would give a whole new mean meaning to...

Hackneyed approach: hack-kneed

But, if one loses ONE leg, there is no hope of running at 60 mph, let alone 30 mph. Maybe 6/2.5, or 30/2.2. Then again, it might result in one burned out shoe, or a person being a real pogo stick. Dodging bullets might be more intuitive, but landing in the wrong spot would make things ENDtuitive...